Image coding with the MAP criterion

Abstract

Summary form only given. BCJR based source coding of image residuals is investigated. From a trellis representation of the residual, a joint source-channel coding system is formed. Then the BCJR algorithm is applied to find the MAP encoding. MAP and minimized squared error encoding are compared. The novelty of this work is the use of the BCJR algorithm and the MAP criterion in the source coding procedure. The source encoding system described preserves more features than an MSE based encoder. Also, blocking artifacts are reduced. Comparisons may be found in the full paper version (see http://www.it.lth.se/tomas/eriksson/spl I.bar/novak/spl I.bar/anderson/spl I.bar/dcc02.ps, 2001).